diff --git a/.github/workflows/analysis_codeql.yml b/.github/workflows/analysis_codeql.yml
new file mode 100644
index 00000000..283b1764
--- /dev/null
+++ b/.github/workflows/analysis_codeql.yml
@@ -0,0 +1,25 @@
+name: CodeQL Analysis
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  analyze:
+    name: Analyze code with CodeQL
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        languages: python
+      
+    - name: Autobuild CodeQL database
+      uses: github/codeql-action/autobuild@v1
+      
+    - name: Analyze code with CodeQL
+      uses: github/codeql-action/analyze@v1
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 00000000..7c2d8aea
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,20 @@
+name : push events workflow
+
+on:
+  push:
+    branches:
+      - i191855_python-machine-learning-book-3rd-edition
+    
+jobs :
+  unit-testing :
+    runs-on: ubuntu-latest
+    
+    steps :
+      - name : Checkout Code
+        uses : actions/checkout@v2
+        
+      - name : Install Package
+        run  : pip install pytest numpy pandas
+        
+      - name : Run Test
+        run  : pytest /ch08/additional_features/test_preprocessing.py 
diff --git a/.github/workflows/pylint.yml b/.github/workflows/pylint.yml
new file mode 100644
index 00000000..5d351b4f
--- /dev/null
+++ b/.github/workflows/pylint.yml
@@ -0,0 +1,26 @@
+name: My Workflow
+on:
+  push:
+    branches:
+      - i191855_branch_feat_addition
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.8", "3.9", "3.10"]
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v3
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pylint
+    - name: Analysing the code with pylint
+      run: |
+        pylint $(git ls-files '*.py')
+      working-directory: additional_features
+